Impact of catechol-o-methyltransferase polymorphisms on risperidone treatment for schizophrenia and its potential clinical significance
Abstract
The main aim was to study the effects of COMT polymorphisms on response of risperidone treatment for schizophrenia and investigate the correlation between memory function of schizophrenia patients and COMT polymorphisms. Subjects were 83 schizophrenic patients who were antipsychotic drug free at the initiation of this study. Peripheral blood samples were obtained to identify COMT polymorphisms by using a polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Clinical Global Impressions (CGI), Positive and Negative Syndrome Scale (PANSS) and Wechsler Memory Scale (WMS) test were used to assess the effect of risperidone treatment. The Val/Met carriers showed a significant increase in change of P300 during treatment (P=0.032). Association of Val/Met carriers performed better than other genotypes (P=0.028). The mean plasma concentration of prolactin of Val/Val carriers was significantly lower (P=0.017). The COMT polymorphisms may be a potential biomarker for clinical risperidone treatment in schizophrenia.
References
Chronic antipsychotics treatment regulates MAOA, MAOB and COMT gene expression in rat frontal cortex
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Antipsychotic Drugs
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